Missouri State University
At the Missouri State Fruit Experiment Station

Daily Archives: October 21, 2013

Grape phenology and GDD accumulation

We have some more Catawba, Chambourcin and a few Norton to harvest yet. GDD base 50 accumulated since April 1 = 3404 http://agebb.missouri.edu/weather/reports/gddTable.asp Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf

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